HOME โ€บSMALL BUSINESS RESOURCES โ€บ Sole Trader Guide โ€บ Understanding Sole Trader Tax Responsibilities

Sole Trader Guide

Understanding Sole Trader Tax Responsibilities

Last Updated on 30/01/2026
Written by Simon Jones
Fact Checked
6 minutes read

There are over a million Aussies running a registered business as a sole trader. This suits people who like to be their own boss and keep all the profits from their hard work. But tax-wise, doing everything yourself comes with a big trade-off โ€“ youโ€™re not a separate legal entity, so the ATO will treat you and the business as the same โ€˜taxable personโ€™ for tax purposes.

Sole trader tax basics

A sole trader business structure has no separate legal entity. Your business income is included in your personal income and you report it in your own individual tax return. You donโ€™t lodge a separate tax return just for the business like you would with a company tax return. That also means youโ€™re personally on the hook for the businessโ€™s outcomes:

  • If you make a profit, itโ€™s your income.
  • If you make a loss, itโ€™s your loss.
  • Youโ€™re also responsible for all the businessโ€™s tax obligations.

Youโ€™ll deal with the Australian Taxation Office (ATO) yourself, unless you use a registered tax agent.

Income tax for sole traders

At the end of the financial year, youโ€™ll work out your net income from the business using the following equation:

Business income โ€“ Business expenses = Taxable income

Your taxable income then gets added to your other income (e.g. employment income, investment income, bank interest, other assessable income) to pull together your total income for the year.

From a tax perspective, sole traders pay tax at individual marginal tax rates, not a flat company rate. Australia also has a tax-free threshold, so you donโ€™t pay tax on the first part of your personal taxable income. Just keep an eye on these amounts as every few years there are changes to the personal income tax rates and thresholds that apply.

What counts as assessable income?

  • Sales and fees from clients (i.e. business income).
  • Bank interest.
  • Some lump sum payments, depending on what they relate to.
  • Some capital gains if you sold assets at a profit.

Claiming legitimate deductions

During tax time, you need to know exactly what you can and canโ€™t claim. In general, legitimate business expenses are those you incur in order to earn your income. That might include tools and software, subscriptions, insurance, phone/internet (business-use portion), travel, and professional fees.

A tax deduction cuts down how much you pay tax on because it reduces your taxable income base (your taxable income amount). The goal isnโ€™t to claim everything, but rather to claim whatโ€™s reasonable and supported by your records.

Lodging your tax return as a sole trader

As a sole trader, you will lodge your tax return as an individual. You’ll need to lodge a tax return even if your business is small โ€“โ€“ even if youโ€™re under the tax-free threshold โ€“โ€“ because your return still has to report income.

When you lodge your tax return, you must include a separate business schedule that covers all your business income and deductions. So youโ€™re still lodging a personal tax return, but with extra details about the business itself.

Most sole traders lodge online through the ATOโ€™s online services or through a registered tax agent. If you use a tax agent, you will enjoy extended lodgment dates under the agent lodgment program, so your deadline will depend on your circumstances.

ย 

Sole trader registration requirements

tax registrations for sole traders, ABN, GST, BAS, PAYG

When you register as a sole trader, there are a few requirements to get you started and keep your business compliant.

ABN: Your business identifier

If youโ€™re running a business, youโ€™ll have to apply for an Australian Business Number (ABN). This is what you use on invoices and when dealing with other businesses and the government.

GST: Goods and services tax

You will need to register for GST when your turnover hits the ATO’s mandated threshold of $75,000. Be aware that you need an ABN to register for GST.

Once youโ€™re registered for GST, you will need to:

  • Charge GST on taxable sales (goods and services tax on your invoices).\
  • Issue a tax invoice that meets the proper requirements.
  • Track all GST collected and GST paid.
  • Lodge a business activity statement (BAS).

BAS and other tax registrations

If youโ€™re GST-registered, BAS becomes part of running your business. Depending on your situation, you might also have other tax obligations, like PAYG withholding if you hire staff.

You can also register multiple things at once (i.e. ABN, GST and other business registrations) through online registration services.

PAYG instalments

Sole traders can pay their taxes using the Pay As You Go (PAYG) system. This is a way to prepay your income tax during the year so that you donโ€™t end up with a massive tax bill after you lodge. Not everyone starts on PAYG instalments immediately. The ATO will notify you if and when you enter the system.

Record-keeping as a sole trader

Keeping records as a sole trader is an essential business practice and will save you a few headaches come tax time. That means you should:

  • Keep invoices issued and received.
  • Keep receipts for deductibles.
  • Track income and expenses in the same place.
  • Reconcile your bank account.
  • Keep notes on any โ€˜grey areasโ€™ (i.e. mixed personal/business use)

Capital gains tax and other income

Your sole trader return can include more than just business trading income. It might also cover:

  • Capital gains tax could apply if you sell certain assets at a gain.
  • Bank interest and investment income still count as other assessable income.
  • If you earn partnership income because youโ€™re also in a partnership, that can affect your overall total income.

Bottom line

Sole traders need a complete picture of their finances to be successful, and understanding their tax obligations is part of that. Knowing what you owe the ATO and keeping records to track it are part of running a business. With dedicated accounting software, you will be able to maintain and report all of your records so that you aren’t caught off guard during tax time.

About the Author

Simon Jones

Content Writer
Simon has spent more than 15 years as a journalist and content marketer, covering a broad spectrum of topics for both print and digital mastheads. He specialises in finance and technology, with a particular interest in the intersection of AI and fintech.

Simon Jones

Content Writer
Simon has spent more than 15 years as a journalist and content marketer, covering a broad spectrum of topics for both print and digital mastheads. He specialises in finance and technology, with a particular interest in the intersection of AI and fintech.

Try Reckon One free for 30 days

Cancel anytime. Unlimited users.